Sure you can though it has its risks.
What I have seen done is a detachment of Supply troops or wagons go into a wilderness that a player owns carrying a stash of gold which the storehouse doesn't protect after all.
A screen of a few scouts could be a good move too as many folks scout (in the first incidence anyhow) with only a handful of scouts. So if they should stumble across you with 1-10 scouts if you sent 50+ they'll all die without revealing you have a pot of gold out there, and You get a report saying you were scouted and will have a chance to move your stash.
What wilderness to put them in? Well that's up to you but I do have a favorite myself...